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In page Krasnoyarsk:

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The river Yenisei flows from west to east through the city. Due to the Krasnoyarsk hydroelectric dam 32 km (20 mi) upstream, the Yenisei never freezes in winter and never[citation needed] exceeds +14 °C (57 °F) in summer through the city. Near the city center, its elevation is 136 m (446 ft) above sea level. There are several islands in the river, the largest of which are Tatyshev and Otdyha Isles, used mainly for recreation.